Clay-grinding mill



(No Model.) 2 Sheets-Sheet 1.

T. 8v J. CLIFFORD.

CLAY GRINIHNG MILL.

No. 432,602. Patented July 22, 1890.

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`(No Model.) 2 sheets-sheet 2.

T. 8v JL CLIFFORD. CLAY GRINDING MILL.

No. 432,602. Patented July 22, 1890. L

UNITED STATES I PATENT OFFICE.

THOMAS CLIFFORD AND JAMES CLIFFORD, OF IVEST SUPERIOR, IVISOONSIN.

CLAY-GRINDING MILL.

SPECIFICATION forming part of Letters Patent No. 432,602, dated J' uly 22, 1890.

Application filed March 7, 189D. Serial No. 342,993. (No model.)

To all whom, t may concern:

Be it known that we, THOMAS CLIFFORD and JAMES CLIFFORD, citizens of the United States, and residents of Vest Superior, in the county ot' Douglas, in the State of IVis- `consin, have invented a new and useful Clay- Grinding Mill, ol' which the following is a description.

The invention relates to grinding-mills of the class used in crushing and disintegrating lumps and masses ot clay or other analogous material preparatory to molding the same into forms suitable for use in building walls or other structures of masonry, or for other purposes.

Theinvention consistsin certain novel elements or combinations of elements in a mill of the class referred to, as will first be described in detail, and then specifically indicated in the concluding; clauses of this specification.

In the drawings, Figure l represents a side 'elevation of a mill in which my improvements are embodied, portions being broken out to expose otherwise concealed parts. Fig. 2 is a partial top plan view. Fig. 3 is a View of the standard which bears the adjustable discharging-disk detached from its support. Fig. 4 is a view of the discharging-disk and its shaft detached from its bearings. Fig. 5 is a partial vertical section, as in the line r o in Fig. 2.

The receptacle B, commonly termed the clay-pan, is mounted upon'a supportingframe A, the pan resting centrally upon 'a pivot-post A2, whi-ch is stepped at its foot in a central transverse sill A, and is extended upwardly therefrom through a central subplate or transverse bar A3, which secures it in its perpendicular and central position. Mounted upon a transverse shaft c, which has bearings in blocks c c', which are movable vertically in the bifurcations of the standards A5 A5 upon the oppositely-placed plates A4 A4 of the trame, are the chasing-rollers C C, arranged in an ordinary manner obliquely to and upon opposite sides of the transverse bar A, In the angle formed at the junction of the vertical wall E and the horizontal bottom plate or i'loor B4 of the pan is fixed the continuous support or buttress B2, Which from its upper to its lower extremity is downwardly and inwardly curved, as shown. Fixed upon the transverse bar A, and operating in conjunction with the pan and its chasing-rollers,

are the end scrapers s and s', each curved at 5 5 its outer extremity to correspond to the curvature of the pan and anintermediate Scrapers? Mounted upon one of the plates, as A7, of the supporting-frame A, is the variously-adjustable discharging-disk D. As shown in 6c of the box d, in which in turn the shaft di 7o ot' the disk D is received. The disk is xed directly upon a hub 71 which loosely receives the shaft d?, the disk being secured by asuitable collar 7L and pin h2 or other analogous means applied upon the inner extremity of 75 the shaft.

As seen in Fig. the extension d2 of the standard has a horizon-tal encircling groove g, which receives a securingpin g; and, as

seen in Fig. 4, the shaft di of the disk has a 8o like groove g2 to receive a similar pin g3, to secure such shaft in its proper adjustment. A scraper s3 extends outwardly from the shaft of the disk, in the manner shown, its edge being coincident with the t'aee of the disk and 8 5 nearly in contact therewith, to prevent the accumulated material adhering thereto from being carried beyond the desired altitude.

In the operation of the apparatus the disk` is at the outset adjusted in its elevated po- 9o sition, and power being applied in any ordinary manner the pan is set in motion and the grinding process is continued until the contents thereof have been reduced to the desired degree of plasticity, whereupon the disk isldepressed to its engaging adjustment, in which, the revolution ofthe receptaclebeing further continued, it will be revolved through contact therewith, the plastic mass will be brought into contact with its opposing roo face, and adhering thereto will be borne upwardly in its revolution until intercepted and The 65 detached by the scraper, it will in an obvious manner be caused to fall outwardly over the rim of thepan into any suitable receptacle.

As will be manifest, the diagonal arrangementand the end curvature of the end scrapers s and s effect clearance of accumulating matter from the dish-shaped sides of the pan anddirect such matter into the path of the rollers O O, While the form and dimensions of the disk adapt it to fit the curved sides of the pan and in the revolution thereof take up from the same all adhering matter and gradually but surely bring it into position to be acted upon, first, by the chasing-rollers, and finally by the adjustable elevating and discharging'disk and its scraper.

As will be seen in Fig. 2, the disk and its shaft may be thrown entirely outside the'ver.- tical plane of the clay-pan-an adjustment which is sometimes of much advantage when fresh material is to be supplied.

The invention having been thus described, what is claimed isl. In a clay-grinding mill, the dish-shaped clay-pan and the circular elevatable and depressible discharging-disk pivotally mounted in bearings outside the pan conformed to the curved interior thereof and adapted to receive rotation from the pan and to carry up adhering matter for discharge over the margin of the pan, in combination.

2. In a clay-grinding mill, thehorizoniallyrevoluble clay-pan and the adjustable discharging-disk receiving rotation from the pan and thereby elevating adhering portions of the contents thereof to their discharging sition, in combination.

3. The described horizontally-revoluble onepart clay-pan having curved or dish-shaped sides and continuousunbroken rim, t-he chasing-rollers arranged transversely of the pan, the obliquely-placed outer Scrapers s and s', mounted upon the obliquely-arranged trans- 4. In a clay-grinding mill, a horizontally-A.

revoluble one-part pan having a continuous unbroken and unrecessed rim, combined With a vertically-adjustable discharging-disk, the periphery of which is conformed to theinterior surface of the pan and which is adapted to be depressed, moving in the arc of a circle, from its elevated position into engagement with the' contents of the pan and to cause such contents to be discharged through the revolution of the pan outwardlyover the rim of the same, substantially as set forth.

5. In a clay-grinding mill, a horizontally` revoluble clay-pan, a standard upon a iixed portion of the mill, a shaft pivotally mounted Aupon the standard, a circular disk revoluble upon the shaft, and a scraper mounted upon the shaft, in combination.

G. In a clay-grinding mill, adischarging-disk Which is supported upon a fixed portion of the mill, which has rotary movement in ahorizontal plane, which has movement by its shaft upon a horizontal pivot and which is revoluble in a vertical plane upon its pivoted shaft.

THOMAS CLIFFORD. JAMES CLIFFORD.

Witnesses as to Thomas Clifords signature:

HENRY E. COOPER, ARTHUR ASHLEY. lVitnesses as to .I ames Cliffords signature;

F. C. STAMM, C. D. FELT. 

